Throttle-valve.



No. 813,110A

R. A. NORLING. THROTTLE VALVE.

APPLIOATION FILED MAY 15. 1905. K

WL l Q Mm PATENTED FEB. 20, 1906.

REINHOLD A. NORLIG, OF AURORA, ILLINOIS, ASSIGNOR TO AURORA AUTOMATIC PORATION OF. ILLINOIS.

MACHINERY COMPANY, OF AURORA, ILLINOIS,l A COR-v THROTTLE-VALVE Specification of Letters Patent.

Patenten Feb. 20,1906.

Application filed May 15, 1905. Serial'No. 260,525.

To LM whom it may concern,.-

Be it known that LING, a citizen of the resident of Aurora, in the county State of Illinois, and useful Improvements in Throttle-Valves; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to throttle-valves for portable pneumatic hammers or devices of that class embracing a barrel or cylinder, a piston or plunger adapted to slide therein, anda controlling-valve through which the air or other fluid under pressure is admitted to'and permitted to escape fromv the opposite ends of the cylinder or barrel to give reciprocatory movement tothe plunger therein.

The `tool illustrated inthe accompanying drawings is designed for use asa rivetinghammer but-the same features of construction illustrated in said drawings and herein claimed may be employed in a tool for chipping or other purposes. t

The invention consists in the matters hereof Kane and inafter described, and more particularly embodyingmy invention,

pointed out in the appended claims.

As shown in the accompanying drawings, Figure l is a view in side elevation of a tool showing thethro'ttlc-valve in vcentral longitudinal section. Fig. 2 is a cross-section of the same, taken transversely through the throttle-valve and handle. Fig. 3 is a detail sectionx'taken upon line 3 3 of Fig. l.

the valve-casing of As shown in said drawings, A indicates the working cylinder or barrel of the tool.- On one sideof the cylinder at its inner end is located an extension or'pnojectionB, forming a controlling-valve.

O indicates a handle, vwhich is made integral with -the innervend ofthe cylinder A. The said cylinder A -is originally provided with a bore extending through lthe saine from end to end, and said bore is closed at the inner end of the cylinder by means of a pl D, inserted in the inner end ofthe borel an secured 'therein by a screw-'threaded connection.

The throttle-valve constituting my inven- I, REiNnoLD A. Noii- United States, and a g tion is located in the inner end of the barrel ad]acent to the handle and generally parallel therewith, said throttle-valve 'passing through the plug D and the parts of the bal'- have invented certain new l rel adjacent thereto. Referring to the conistruction of the said throttle -valve, `the provided at its inner end "G, and

transverse bore or passage in which the throttle-valve is located opens at its ends through the outer surface of the opposite side walls of the cylinder, and one end of said bore constitutes a supply-passage or inlet for the air or other fluid under pressure. In said inlet .end of the bore or passage is inserted a sleeve or nipple E, having interior screw-threads for attachment thereto of the pipe ,or hose through which air is suppliedv to the tool.

This nipple has external screw-threads engaging the corresponding screwthreads in the end of said bore or passage, which is enlarged to receive it. INithin said bore or passage is located a tubular valve-bushing F, which extends through the plug D and into the wall of the cylinder at either side of said plug. AW'ithin said bushing is arranged longitudinally a valve-stem G. At the inlet end of said bore or passage said valve-stem G is provided with a valve-disk g, adapted to bear against a valve-seat formed on the adjacent end of the bushing F. The opposite end of said valve stem extends through and fit-s closely within a guide-aperture f, formed in the end of the valve-bushing'reniote from the air-inlet. Said valve-stem is adapted for contact with an arm h on an actuating-lever orv trigger H, pivotally mounted on the handle,

with its actuating-arm extending along the The thinible E is with. a rigidly-attached central guide-ring e, through which passes the adjacent end of the valve-spindle between said ring e and the valvedisk g is located a coiled actuating-spring G', by which the valve-disk is liel'dvnor'mally against its seat. The bushing F is-provided between `its ends 4with outlet ports j" j", which communicatewith passages leading to the controlling-valve chamber. The valvedisk g when in contact with off communication between the air-supply passage and the interior of the valve-bushing. The valve may be opened by endwise ressure of the trigger-arm z against the said valve-spindle'G, operating to open the inner face of the latter.

its se at shuts IOO iov,

notch i when the locking-bar is thrust inl yond the outer face of .in the guide-passage I5 holdthe outer end of said bar valve. against the tension of and th Provision `1s made for locking the trigger from movement when in position to hold the valve closed, as

follows: I is an endwise-slidmg locking-bar mounted in a guide-passage c formed in the handle C adjacent to oted end of the trigger H, the outer end' oi' sald'locking-.bar being arranged to extend bethe handle at one end of.1t,s part which is ripped by the hand. Said locldng-bar I is he d in the outward limit of its movement by a coiled spring I, located c and pressing on the inner endV of the bar I in such manner as to normally protruded from the outery face of the handle.A Endwise movement of said locking-bar in both directions is, as shown, limited by means of a stop-pin c', extended transversely through the handle and engaging a notch i in the locking-bar. Said locking-bar is provided on its inner face adjacent to the trigger H with a notch i', and the trigger .is provided with a lug h', which is adapted to enter said wardly against the action of the spring H,

but 1s adapted for contact with the side face v of the inner end portion of said locking-bar .posed face of the locking-bar being lbringing the notch i when the latter is thrown outwardly or 1n its normal position, the said lug 7i and the opso arranged that they will be engaged wltheach other when the trigger stands in its normal position. Vor with the throttle-valve closed. When the handle C is grasped by the operator, the locking-bar I will be thrust inwardly by pressure of the hand thereon, thereby o posite the lug h and releasing the trigger H, so that it may be moved by the pressure of the hand or fingers to open the throttle-valve.

I claim as my invention- 1. The combination with a pneumatic-motor cylinderprovided with a throttle-valve bore or passage which is open at both ends and with one end of which the air-supply pipe is connected, of a cylindric valve-bushing located in said bore provided at its supply end with a valve-seat and at its oppositeend with an axial guide-passage and having an intermediate exit-port, an endwise-sliding valvestem the outer end of which extends outwardly through the guide-aperture in the bushing and which is provided with a valvedisk adapted to bear against said seat, and a guide-ring for the inner end of said stem located in the supply end of said bore voutside of the valve` seat and disk.

2. vThe combination With a pneumatic-motor cylinder provided with a throttle-valve bore or passage which is open at both ends and with one end of which the air-supply pi eis connected, of a cylindric valve-bushing ocated in said bore provided at its supply end the piv- 1 nipple inserted in the, supply end of said bore outside of the valve seat and disk, said ni ple being provided with a guide-ring for t e inner end `of the valve-stem.

3. The combination with a pneumatic-motor cylinder provided with a throttle-valve ore or passage which is o en at both ends and with one end of which t e air-supply pipe is connected, of a cylindric valve-bushing located in said bore provided at its supply end with a valve-seat and at its opposite end with an axial guide-passage and'havino an intermediate exit-port, an endwise-sli ing valvestem the outer end of which extends outwardly through the guide-aperture of the bushing, and which is provided with a valvedisk adapted to bear against said seat, a nipple inserted in the supply end of said bore ouside of the valve seat and disk, said nip le being provided with a guide-ring for the 1nating-spring surrounding the said valve-stem between the said guide-ring and the valvedisk. v

4. 'T he combination with a pneumatic-motor cylinder andhandle thereon, of a throttlevalve embracing an endvvise-movable valvestem, a pivoted trig er having an actuatingarm which extends a ong the inner face of the handle, said trigger being adapted to act upon said valve -stem, a springv applied to hold the valve normally in its closed position, and a spring-actuated locking-detent for the trigger havinga part which projects outwardly from the outer face of the handle at one end ofthe same.

5. The combination with a pneumatic-tool cylinder and a handle thereon, of a ,throttlevalve embracing an endwise-movable valvestem, a pivoted trigger adapted to act upon said valve-stem, and having anactuatingarm which extends along the mner'face ofthe handle, a sprin applied to holdthe valve normally in its c osed position, and a lockingdetent for the trigger embracing an endwisemovable s ring-actuated locking-bar which protrudes iiom the outer face ofthe handle at one end of the same, said trigger bein provided with a lug Which projects towar said locking-bar, and the locking-bar having a ner end of the valve-stem, and a coiled actunotch or recess adapted to receive said lug to i effect the release of the trigger When the -bar is pushed inwardly by `pressure ofthe hand thereon. f

6. The combination with a cylinder and a plunger therein, of a handle made lntegral with the 'inner end of the'cylinder, sald cylinder being provided with a bore extendlng through the inner end thereof, aphlg inserted my invention I affix my signature, in presin said borefor Closing the inner end of the ence of two Witnesses, this 10th day of May,

cylinder" and throttle valve embracing a A. D. 1905.

valve vWhich extends through the REINHOLD A. NORLING. 5 said 'p and the surrounding part of the'l- Witnesses:

cylinder W. H. PEASE,

. In testiinony that I- claim the foregoing as A. E. GRANT. 

